(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

I am finding the minimum coefficient μ between tires and road so that cars do not slide off. I have my equations for ƩF_{y}and ƩF_{x}and I know μ = [f_{s}]/[/N]

So I would need to use cramer's rule on my equations to find f_{s}and N.

But I am not sure how to use cramer's rule for my equations.

2. Relevant equations

ƩF_{x}= Nsinθ -f_{s}cosθ = mv^{2}/r

ƩF_{y}= Ncosθ + f_{s}sinθ = mg

3. The attempt at a solution

I actually already have the answer but im not sure how to use cramer's to get to it.

f_{s}= m(gsinθ-v^{2}/r*cosθ)

N = m(v^{2}/r*sinθ+gcosθ)

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Using Cramer's Rule to find needed equations

**Physics Forums | Science Articles, Homework Help, Discussion**